Internal-combustion engines – Rotary – With transfer means intermediate single compression volume...
Patent
1986-06-30
1987-08-25
Koczo, Michael
Internal-combustion engines
Rotary
With transfer means intermediate single compression volume...
F02B 5300
Patent
active
046885315
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a rotary two-stroke internal combustion engine with arrangements for the introduction of fuel and removal of exhaust gases.
The object of the invention is to provide a rotary internal combustion engine which has a minimum of moving parts, which has a large power to weight and power to size ratio, which runs evenly and has relatively high power even at low revolutions, and which can work at high compression ratio.
This is achieved through the features stated in the following patent claims .
An exemplary embodiment of the invention is illustrated schematically in the accompanying drawings, wherein:
FIG. 1 shows a cross-section through a rotary internal combustion engine according to the invention, along the line A-A on FIG. 2, and
FIG. 2 shows a longitudinal section through the same engine, this time along the line B-B on FIG. 1.
On the drawings the reference number 1 designates a cylindrical rotor housing with end plates 2, 3. In the end plates 2, 3 of rotor housing 1 is a rotor 4 eccentrically mounted at 5, 6. In FIG. 1 the center of the rotor housing 1 is designated 7, and the center of the rotor 4 is designated 8. In FIG. 2 the center line of the rotor housing 1 is designated 7', while the center line of the rotor 4 is designated 8'. On each side of the rotor 4 a gearwheel 9, 10 is installed to drive an oil pump and a fuel pump, not shown on the drawings.
The rotor 4 is constructed with three radial, cylindrical bores 11 at mutual equal angular distance. In each of the bores 11 is installed a sliding cylinder sleeve 12 which is closed at its outer end, which faces out towards the cylindrical inside of the rotor housing 1. At the inner end of the cylinder sleeve 12 are secured two shaft journals 13, 14 which outside of the cylinder sleeve 12, are supported at one end of a link 15 or 16 respectively, which at the other end is supported by a journal 17 or 18 respectively, which is eccentrically and permanently fixed to an end cover 19 or 20 respectively, which is bolted on to the end plate 2 or 3 respectively of the rotor housing 1, in such a way that the journals 17, 18 lie concentrically in the rotor housing 1. Three links 15 are thus supported at journal 17, and three links 16 are thus supported at journal 18.
A sliding piston 21 is positioned in each cylinder sleeve 12 and fastened to one end of a rod 22. The other end of rod 22 is fastened by a pin 23 to a common support hub 24. The support hub 24 is fastened by screw bolts 25 to the cylindrical wall of an inner, central hubcase 26 in the rotor 4. The rotor housing 1 as well as the rotor 4 are constructed with passages 27 for circulating cooling medium.
In each cylinder sleeve 12 is arranged a radial inlet port 28 for the gas mixture to drive the engine. When rotor 4 rotates, inlet port 28 will, during a given phase of each rotation, communicate with a suction port 29 which is provided in rotor 4. During this phase of the revolution, the suction port 29 also communicates with a manifold groove 30 and a carburetor port 31 which is milled in the end plate 2 of the rotor housing 1, and further with a carburetor (not shown) which can be bolted on a pipe stub 32 which communicates with the carburetor port 31 and is fastened to the end plate 2.
Furthermore, in each cylinder sleeve 12 is provided an outlet port 33 for compressed gas mixture. When rotor 4 rotates, the outlet port 33 will, during a given phase of each rotation, communicate with an associated transfer port 34 which is provided in rotor 4 at each cylinder sleeve 12. The transfer ports 34 lead out to the periphery of the rotor 4, and each transfer port 34 has thus the whole time open connection with a cavity 35, 35' or 35" respectively, whose volume changes the whole time as rotor 4 rotates, and which is delimited by two cylinder sleeves 12, the periphery surface of the rotor 4 between the said two cylinder sleeves 12, the circular internal wall of the rotor housing 1 between the two cylinder sleeves 12 and the end plates 2, 3 of the rotor housing 1.
Each of the three cyl
REFERENCES:
patent: 997824 (1911-07-01), Jacobsen
patent: 1308339 (1919-07-01), Debnam
patent: 1358450 (1920-11-01), Kawate
patent: 1602018 (1926-10-01), Harvey
patent: 3398725 (1968-08-01), Null
patent: 3429301 (1969-02-01), Sandidge
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